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Hot Topic
Solar System
Mercury
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Mercury Rising
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| Topic: Mercury |
11/04/09 |
| On its final flyby of Mercury, NASA's Messenger spacecraft has captured images of never before seen regions of the planet. Messenger is providing new scientific findings about the closest planet to the sun, and teaching astrobiologists about how rocky planets form and evolve. |
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Mercury In Sharper Focus
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| Topic: Mercury |
05/02/09 |
| NASA's Messenger spacecraft has returned fascinated observations from the tiny planet next to the sun, including the discovery of magnesium in Mercury's atmosphere. The data also shows that Mercury's geological past was much more active than scientists previously believed. The findings could help astrobiologists understand the formation and evolution of rocky planets. |
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Mercury Lacks Iron
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| Topic: Mercury |
07/05/08 |
| New data from Mercury has revealed that volcanism played a larger role in the planet’s past than previously thought. Additionally, the surface of Mercury has been found to be very iron deficient. |
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Mercury's Iron Snow
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| Topic: Mercury |
05/13/08 |
| Scientific evidence suggests that iron 'snow' may form deep inside of Mercury. The movement of this iron snow could be responsible for Mercury's magnetic field. The finding has implications in our understanding of the nature and evolution of planets. |
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Getting a Peek at Mercury
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| Topic: Mercury |
02/02/08 |
| NASA's MESSENGER spacecraft has made its first flyby of Mercury. The craft collected data that shows a diversity of geological processes on the planet, and provides a new look at the planet's magnetosphere. |
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Spun Up for the Flyby
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| Topic: Mercury |
01/13/08 |
| NASA is about to view one of the last unexplored terrains in the inner Solar System when the MESSENGER spacecraft flies within 125 miles of Mercury’s surface. It has been over thirty years since the planet was visited by a spacecraft, and Mercury's composition still remains a mystery for scientists. |
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Molten Mercury
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| Topic: Mercury |
05/04/07 |
| Scientists using a high-precision planetary radar technique have discovered that Mercury probably has a molten core. The finding is an important step in understanding how planets form and evolve. |
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Mercury Shower
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| Topic: Mercury |
04/05/06 |
| New computer simulations of Mercury's formation show the fate of material blasted out into space when a large proto-planet collided with a giant asteroid 4.5 billion years ago. The simulations, which track the material over several million years, shed light on why Mercury is denser than expected and show that some of the ejected material would have found its way to the Earth and Venus. |
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Earth Swings Messenger
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| Topic: Mercury |
08/04/05 |
| NASA's MESSENGER spacecraft, headed toward the first study of Mercury from orbit, swung by Earth today for a gravity assist that propelled it deeper into the inner solar system. |
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Messenger Out of the Bottle
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| Topic: Mercury |
04/19/05 |
| MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) is a scientific investigation of the planet Mercury, and the first NASA mission designed to orbit the planet closest to the Sun. |
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